Boring-mill.



PATENTED MAR 24. 1908.

P. w. PARKER. BORING MILL.

APPLICATION FILED JULY 31. 1907.

2 SHEETS-SHEET l.

Inventor 1 W u 851- Attorney Witnesses: 6614014 No. 882,580. PATENTED MAR. 24, 1908. F. W. PARKER.

BORING MILL.

APPLICATION FILED JULY 31. 1907- 2 SHEETS-SHEET 2.

Witnesses: Inventor 11. S. fifilwv. Attorney 7m: NORRIS PETERS c0. \VASHIrlcYcN, n c.

UNITED STAT PATENT OFFICE.

FRANK WESLEY PARKER, OF NEW YORK, N. Y., ASSIGNOR 'lO NIhES-BEM'EN'P-POND COMPANY, OF JERSEY tllY, NEW JERSEY.

BORING-MILL.

Application filed July 31, 1907.

T 0 all whom it may concern:

Be it known that I, FRANK W EsLEY PARKER, a citizen of the United States, residing at New York, New York county, New York, have invented certain new and useful Improvements in Boring-Mills, of which the following is a specification.

This invention, pertaining to improvements in boring mills, will be readily understood from the following description taken in connection with the accompanying drawings in which:

Figure 1 is a plan of a boring mill embodying an exempli'lication of my invention: Fig. 2 a front elevation of the same: Fig. 3 an end elevation of the same: and Fig. 4 a plan illustrating a somewhat modified construction.

In the commoner types of boring mills the housings are secured in fixed position to the base of the machine and the swing capacity is a constant quantity. But there is a species of machines of this general class in which the housings can be slid backward and secured to a new position upon the base of the machine thus bringing the housings at a greater radial distance from the axis of the face-plate and thereby increasing the swingcapacity of the machine. In thus adjusting these housings, to increase the swing-capacity, the housings remain a constant distance apart. hen the housings are thus set rearwardly the rail goes rearwardly with them and so also do the tool-carrying accessories carried by the rail, and, especially for boring operations, it becomes necessary to provide facilities for extending some of the tool carrying accessories forwardly from the rearwardly displaced rail in order that the tool may have proper relationship with the axis of the face-plate.

In boring mills embodying my invention an increase in swing capacity is gotten by separating the housings further from each other and further from the axis of the face plate, the rail being made of a length corresponding with the maximum swing capacity to be provided for. In making the adj ustment the vertical plane of the housing fronts and of the rail remains constant.

In the drawings, and excluding Fig. 4 from present consideration: 1, indicates the base-piece of a boring mill: 2, the usual faceplate: 3, side wing extensions of the basepiece for the support of the housings which are to be bolted to the wings: 4, longitudinal Specification of Letters Patent.

Patented March 24, 1908.

Serial No. 386,351.

slots in the wings for the reception of bolts to secure the housings to the wings; 5, one

of the housings secured upon one of the wings: 6, the other housing upon the other wing: 7, side braces carried by the outer sides of the housings to still'en them laterally: 8, saddles mounted for vertical sliding motion on the fronts of the housings: 9, the rail for the support of the usual tool-carrying mechanism: and 10, lOl'lgltUtllIlitl slideways on the rear of the rail and engaging the saddles whereby the rail is supported upon the housings and capable of endwise motion relative thereto.

The-rail is to be raised and lowered in any usual or suitable manner. In Figs. 1 and 2 the parts are adjusted for about the minimum swing capacity and the machine may deal with work of any diameter permitted by the inner front corners of the housings in their present position. Under these conditions it is to be observed that the base-piece and the rail have considerable surplus length, and that the front of the rail occupies a position rearward of the axis of the face-plate as usual in boring mills. If, now, it be desired to increase the swing capacity of the mill, say to the maximum, one of the housings is to be unbolted from the base and slid outward to extreme position upon the rail and wing and re-secured to the wing after which the other-housing is to be similarly adjusted. The distance between the housings and also the swing capacity of the mill, has now been increased and without any disturbance of the rail as regards the relationship of its vertical plane to the vertical plane of the axis of the face-plate. No forward extending of the tool carrying devices is requisite.

In the machine as thus far described the adjustment for increasing the swing capacity of the mill has not necessarily brought about any endwise disturbance of the rail, the rail remaining in normal endwise position and both housings sliding relative to it. But it will be obvious that the same result in increasing the swing capacity will be brought about if the rail is without sliding capacity relative to one of the housings, providing the other housing is so connected with the rail as to provide for all of the needed adjustment of the two housings relative to each other.

Such an arrangement is illustrated in Fig. 4

which differs from Fig. 1 only in that housing 5 has no saddle through which the rail may slide, its place being taken by the usual vertical sliding engagement of the rail upon the housing. In this modification, if housing 5 is shifted to the right it carries the rail With it, and all sliding of housings relative to rail takes place at housing 6. The modification illustrated in Fig. 4 may represent the more economical construction, While that illustrated in Fig. 1 is a more symmetrical structure by reason of the fact that under all conditions of adjustment for the housings the rail may project equally at each end of the machine and the machine as a Whole there fore take up a constant amount of space WidthWise of the machine, While in Fig. 4 the rail projects its surplus length mainly to the left except When the machine is adjusted for maximum swing capacity.

8 I claim:

1. A boring mill comprising a base-piece, a face-plate mounted for rotation thereon on av vertical axis in a fixed vertical plane, Wings extending sideWise from the base piece, housings mounted for sliding adjustment on the Wings to and from each other and to and from the axis of the face-plate in a vertical plane tangent to a circle struck from the center of the face-plate, a saddle fitted for vertical sliding motion 011 the front of one of said housings, a horizontal rail having its front disposed in a vertical plane tangent to a circle struck from the center of said face-plate and having one of its ends fitted for longitudinal sliding motion in said saddle, and a connecting device engaging the other end of said rail and the other housing, combined substantially as set forth.

2. A boring mill comprising a base-piece, a face-plate mounted for rotation thereon on a vertical axis in a fixed vertical plane, Wings extending sideWise from the base piece, housings mounted for sliding adjustment on the Wings to and from each other and to and from the axis of the face-plate in a vertical plane tangent to a circle struck from the center of theface-plate, saddles fitted for vertical sliding motion on the fronts of said housing,

and a horizontal rail having its front disposed in a plane tangent to a circle struck from the center of said face-plate and having its ends fitted for longitudinal sliding motion in said saddles, combined substantially as set forth.

FRANK VESLEY PARKER.

Witnesses:

WALTER L. CLARK, H. M. CLARK. 

